<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>OpenPdf测试</title>
</head>
<body>
<h1>OpenPdf测试</h1>
<form action="/user/userPrint" method="post">

    <input type="submit" value="下载"/>

</form>
</body>
</html>